Mark Radbourne / mbedtls

mbed TLS Build

Dependents:   Encrypt_Decrypt1 mbed_blink_tls encrypt encrypt

library/pk.c@0:cdf462088d13, 2017-01-05 (annotated)

Committer:
markrad
Date:
Thu Jan 05 00:18:44 2017 +0000
Revision:
0:cdf462088d13
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
markrad 0:cdf462088d13 1 /*
markrad 0:cdf462088d13 2 * Public Key abstraction layer
markrad 0:cdf462088d13 3 *
markrad 0:cdf462088d13 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
markrad 0:cdf462088d13 5 * SPDX-License-Identifier: Apache-2.0
markrad 0:cdf462088d13 6 *
markrad 0:cdf462088d13 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
markrad 0:cdf462088d13 8 * not use this file except in compliance with the License.
markrad 0:cdf462088d13 9 * You may obtain a copy of the License at
markrad 0:cdf462088d13 10 *
markrad 0:cdf462088d13 11 * http://www.apache.org/licenses/LICENSE-2.0
markrad 0:cdf462088d13 12 *
markrad 0:cdf462088d13 13 * Unless required by applicable law or agreed to in writing, software
markrad 0:cdf462088d13 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
markrad 0:cdf462088d13 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
markrad 0:cdf462088d13 16 * See the License for the specific language governing permissions and
markrad 0:cdf462088d13 17 * limitations under the License.
markrad 0:cdf462088d13 18 *
markrad 0:cdf462088d13 19 * This file is part of mbed TLS (https://tls.mbed.org)
markrad 0:cdf462088d13 20 */
markrad 0:cdf462088d13 21
markrad 0:cdf462088d13 22 #if !defined(MBEDTLS_CONFIG_FILE)
markrad 0:cdf462088d13 23 #include "mbedtls/config.h"
markrad 0:cdf462088d13 24 #else
markrad 0:cdf462088d13 25 #include MBEDTLS_CONFIG_FILE
markrad 0:cdf462088d13 26 #endif
markrad 0:cdf462088d13 27
markrad 0:cdf462088d13 28 #if defined(MBEDTLS_PK_C)
markrad 0:cdf462088d13 29 #include "mbedtls/pk.h"
markrad 0:cdf462088d13 30 #include "mbedtls/pk_internal.h"
markrad 0:cdf462088d13 31
markrad 0:cdf462088d13 32 #if defined(MBEDTLS_RSA_C)
markrad 0:cdf462088d13 33 #include "mbedtls/rsa.h"
markrad 0:cdf462088d13 34 #endif
markrad 0:cdf462088d13 35 #if defined(MBEDTLS_ECP_C)
markrad 0:cdf462088d13 36 #include "mbedtls/ecp.h"
markrad 0:cdf462088d13 37 #endif
markrad 0:cdf462088d13 38 #if defined(MBEDTLS_ECDSA_C)
markrad 0:cdf462088d13 39 #include "mbedtls/ecdsa.h"
markrad 0:cdf462088d13 40 #endif
markrad 0:cdf462088d13 41
markrad 0:cdf462088d13 42 /* Implementation that should never be optimized out by the compiler */
markrad 0:cdf462088d13 43 static void mbedtls_zeroize( void *v, size_t n ) {
markrad 0:cdf462088d13 44 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
markrad 0:cdf462088d13 45 }
markrad 0:cdf462088d13 46
markrad 0:cdf462088d13 47 /*
markrad 0:cdf462088d13 48 * Initialise a mbedtls_pk_context
markrad 0:cdf462088d13 49 */
markrad 0:cdf462088d13 50 void mbedtls_pk_init( mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 51 {
markrad 0:cdf462088d13 52 if( ctx == NULL )
markrad 0:cdf462088d13 53 return;
markrad 0:cdf462088d13 54
markrad 0:cdf462088d13 55 ctx->pk_info = NULL;
markrad 0:cdf462088d13 56 ctx->pk_ctx = NULL;
markrad 0:cdf462088d13 57 }
markrad 0:cdf462088d13 58
markrad 0:cdf462088d13 59 /*
markrad 0:cdf462088d13 60 * Free (the components of) a mbedtls_pk_context
markrad 0:cdf462088d13 61 */
markrad 0:cdf462088d13 62 void mbedtls_pk_free( mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 63 {
markrad 0:cdf462088d13 64 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 65 return;
markrad 0:cdf462088d13 66
markrad 0:cdf462088d13 67 ctx->pk_info->ctx_free_func( ctx->pk_ctx );
markrad 0:cdf462088d13 68
markrad 0:cdf462088d13 69 mbedtls_zeroize( ctx, sizeof( mbedtls_pk_context ) );
markrad 0:cdf462088d13 70 }
markrad 0:cdf462088d13 71
markrad 0:cdf462088d13 72 /*
markrad 0:cdf462088d13 73 * Get pk_info structure from type
markrad 0:cdf462088d13 74 */
markrad 0:cdf462088d13 75 const mbedtls_pk_info_t * mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type )
markrad 0:cdf462088d13 76 {
markrad 0:cdf462088d13 77 switch( pk_type ) {
markrad 0:cdf462088d13 78 #if defined(MBEDTLS_RSA_C)
markrad 0:cdf462088d13 79 case MBEDTLS_PK_RSA:
markrad 0:cdf462088d13 80 return( &mbedtls_rsa_info );
markrad 0:cdf462088d13 81 #endif
markrad 0:cdf462088d13 82 #if defined(MBEDTLS_ECP_C)
markrad 0:cdf462088d13 83 case MBEDTLS_PK_ECKEY:
markrad 0:cdf462088d13 84 return( &mbedtls_eckey_info );
markrad 0:cdf462088d13 85 case MBEDTLS_PK_ECKEY_DH:
markrad 0:cdf462088d13 86 return( &mbedtls_eckeydh_info );
markrad 0:cdf462088d13 87 #endif
markrad 0:cdf462088d13 88 #if defined(MBEDTLS_ECDSA_C)
markrad 0:cdf462088d13 89 case MBEDTLS_PK_ECDSA:
markrad 0:cdf462088d13 90 return( &mbedtls_ecdsa_info );
markrad 0:cdf462088d13 91 #endif
markrad 0:cdf462088d13 92 /* MBEDTLS_PK_RSA_ALT omitted on purpose */
markrad 0:cdf462088d13 93 default:
markrad 0:cdf462088d13 94 return( NULL );
markrad 0:cdf462088d13 95 }
markrad 0:cdf462088d13 96 }
markrad 0:cdf462088d13 97
markrad 0:cdf462088d13 98 /*
markrad 0:cdf462088d13 99 * Initialise context
markrad 0:cdf462088d13 100 */
markrad 0:cdf462088d13 101 int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info )
markrad 0:cdf462088d13 102 {
markrad 0:cdf462088d13 103 if( ctx == NULL || info == NULL || ctx->pk_info != NULL )
markrad 0:cdf462088d13 104 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 105
markrad 0:cdf462088d13 106 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
markrad 0:cdf462088d13 107 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
markrad 0:cdf462088d13 108
markrad 0:cdf462088d13 109 ctx->pk_info = info;
markrad 0:cdf462088d13 110
markrad 0:cdf462088d13 111 return( 0 );
markrad 0:cdf462088d13 112 }
markrad 0:cdf462088d13 113
markrad 0:cdf462088d13 114 #if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
markrad 0:cdf462088d13 115 /*
markrad 0:cdf462088d13 116 * Initialize an RSA-alt context
markrad 0:cdf462088d13 117 */
markrad 0:cdf462088d13 118 int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key,
markrad 0:cdf462088d13 119 mbedtls_pk_rsa_alt_decrypt_func decrypt_func,
markrad 0:cdf462088d13 120 mbedtls_pk_rsa_alt_sign_func sign_func,
markrad 0:cdf462088d13 121 mbedtls_pk_rsa_alt_key_len_func key_len_func )
markrad 0:cdf462088d13 122 {
markrad 0:cdf462088d13 123 mbedtls_rsa_alt_context *rsa_alt;
markrad 0:cdf462088d13 124 const mbedtls_pk_info_t *info = &mbedtls_rsa_alt_info;
markrad 0:cdf462088d13 125
markrad 0:cdf462088d13 126 if( ctx == NULL || ctx->pk_info != NULL )
markrad 0:cdf462088d13 127 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 128
markrad 0:cdf462088d13 129 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
markrad 0:cdf462088d13 130 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
markrad 0:cdf462088d13 131
markrad 0:cdf462088d13 132 ctx->pk_info = info;
markrad 0:cdf462088d13 133
markrad 0:cdf462088d13 134 rsa_alt = (mbedtls_rsa_alt_context *) ctx->pk_ctx;
markrad 0:cdf462088d13 135
markrad 0:cdf462088d13 136 rsa_alt->key = key;
markrad 0:cdf462088d13 137 rsa_alt->decrypt_func = decrypt_func;
markrad 0:cdf462088d13 138 rsa_alt->sign_func = sign_func;
markrad 0:cdf462088d13 139 rsa_alt->key_len_func = key_len_func;
markrad 0:cdf462088d13 140
markrad 0:cdf462088d13 141 return( 0 );
markrad 0:cdf462088d13 142 }
markrad 0:cdf462088d13 143 #endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
markrad 0:cdf462088d13 144
markrad 0:cdf462088d13 145 /*
markrad 0:cdf462088d13 146 * Tell if a PK can do the operations of the given type
markrad 0:cdf462088d13 147 */
markrad 0:cdf462088d13 148 int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type )
markrad 0:cdf462088d13 149 {
markrad 0:cdf462088d13 150 /* null or NONE context can't do anything */
markrad 0:cdf462088d13 151 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 152 return( 0 );
markrad 0:cdf462088d13 153
markrad 0:cdf462088d13 154 return( ctx->pk_info->can_do( type ) );
markrad 0:cdf462088d13 155 }
markrad 0:cdf462088d13 156
markrad 0:cdf462088d13 157 /*
markrad 0:cdf462088d13 158 * Helper for mbedtls_pk_sign and mbedtls_pk_verify
markrad 0:cdf462088d13 159 */
markrad 0:cdf462088d13 160 static inline int pk_hashlen_helper( mbedtls_md_type_t md_alg, size_t *hash_len )
markrad 0:cdf462088d13 161 {
markrad 0:cdf462088d13 162 const mbedtls_md_info_t *md_info;
markrad 0:cdf462088d13 163
markrad 0:cdf462088d13 164 if( *hash_len != 0 )
markrad 0:cdf462088d13 165 return( 0 );
markrad 0:cdf462088d13 166
markrad 0:cdf462088d13 167 if( ( md_info = mbedtls_md_info_from_type( md_alg ) ) == NULL )
markrad 0:cdf462088d13 168 return( -1 );
markrad 0:cdf462088d13 169
markrad 0:cdf462088d13 170 *hash_len = mbedtls_md_get_size( md_info );
markrad 0:cdf462088d13 171 return( 0 );
markrad 0:cdf462088d13 172 }
markrad 0:cdf462088d13 173
markrad 0:cdf462088d13 174 /*
markrad 0:cdf462088d13 175 * Verify a signature
markrad 0:cdf462088d13 176 */
markrad 0:cdf462088d13 177 int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
markrad 0:cdf462088d13 178 const unsigned char *hash, size_t hash_len,
markrad 0:cdf462088d13 179 const unsigned char *sig, size_t sig_len )
markrad 0:cdf462088d13 180 {
markrad 0:cdf462088d13 181 if( ctx == NULL || ctx->pk_info == NULL ||
markrad 0:cdf462088d13 182 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
markrad 0:cdf462088d13 183 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 184
markrad 0:cdf462088d13 185 if( ctx->pk_info->verify_func == NULL )
markrad 0:cdf462088d13 186 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 187
markrad 0:cdf462088d13 188 return( ctx->pk_info->verify_func( ctx->pk_ctx, md_alg, hash, hash_len,
markrad 0:cdf462088d13 189 sig, sig_len ) );
markrad 0:cdf462088d13 190 }
markrad 0:cdf462088d13 191
markrad 0:cdf462088d13 192 /*
markrad 0:cdf462088d13 193 * Verify a signature with options
markrad 0:cdf462088d13 194 */
markrad 0:cdf462088d13 195 int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
markrad 0:cdf462088d13 196 mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
markrad 0:cdf462088d13 197 const unsigned char *hash, size_t hash_len,
markrad 0:cdf462088d13 198 const unsigned char *sig, size_t sig_len )
markrad 0:cdf462088d13 199 {
markrad 0:cdf462088d13 200 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 201 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 202
markrad 0:cdf462088d13 203 if( ! mbedtls_pk_can_do( ctx, type ) )
markrad 0:cdf462088d13 204 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 205
markrad 0:cdf462088d13 206 if( type == MBEDTLS_PK_RSASSA_PSS )
markrad 0:cdf462088d13 207 {
markrad 0:cdf462088d13 208 #if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V21)
markrad 0:cdf462088d13 209 int ret;
markrad 0:cdf462088d13 210 const mbedtls_pk_rsassa_pss_options *pss_opts;
markrad 0:cdf462088d13 211
markrad 0:cdf462088d13 212 if( options == NULL )
markrad 0:cdf462088d13 213 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 214
markrad 0:cdf462088d13 215 pss_opts = (const mbedtls_pk_rsassa_pss_options *) options;
markrad 0:cdf462088d13 216
markrad 0:cdf462088d13 217 if( sig_len < mbedtls_pk_get_len( ctx ) )
markrad 0:cdf462088d13 218 return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
markrad 0:cdf462088d13 219
markrad 0:cdf462088d13 220 ret = mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_pk_rsa( *ctx ),
markrad 0:cdf462088d13 221 NULL, NULL, MBEDTLS_RSA_PUBLIC,
markrad 0:cdf462088d13 222 md_alg, (unsigned int) hash_len, hash,
markrad 0:cdf462088d13 223 pss_opts->mgf1_hash_id,
markrad 0:cdf462088d13 224 pss_opts->expected_salt_len,
markrad 0:cdf462088d13 225 sig );
markrad 0:cdf462088d13 226 if( ret != 0 )
markrad 0:cdf462088d13 227 return( ret );
markrad 0:cdf462088d13 228
markrad 0:cdf462088d13 229 if( sig_len > mbedtls_pk_get_len( ctx ) )
markrad 0:cdf462088d13 230 return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
markrad 0:cdf462088d13 231
markrad 0:cdf462088d13 232 return( 0 );
markrad 0:cdf462088d13 233 #else
markrad 0:cdf462088d13 234 return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
markrad 0:cdf462088d13 235 #endif
markrad 0:cdf462088d13 236 }
markrad 0:cdf462088d13 237
markrad 0:cdf462088d13 238 /* General case: no options */
markrad 0:cdf462088d13 239 if( options != NULL )
markrad 0:cdf462088d13 240 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 241
markrad 0:cdf462088d13 242 return( mbedtls_pk_verify( ctx, md_alg, hash, hash_len, sig, sig_len ) );
markrad 0:cdf462088d13 243 }
markrad 0:cdf462088d13 244
markrad 0:cdf462088d13 245 /*
markrad 0:cdf462088d13 246 * Make a signature
markrad 0:cdf462088d13 247 */
markrad 0:cdf462088d13 248 int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
markrad 0:cdf462088d13 249 const unsigned char *hash, size_t hash_len,
markrad 0:cdf462088d13 250 unsigned char *sig, size_t *sig_len,
markrad 0:cdf462088d13 251 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
markrad 0:cdf462088d13 252 {
markrad 0:cdf462088d13 253 if( ctx == NULL || ctx->pk_info == NULL ||
markrad 0:cdf462088d13 254 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
markrad 0:cdf462088d13 255 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 256
markrad 0:cdf462088d13 257 if( ctx->pk_info->sign_func == NULL )
markrad 0:cdf462088d13 258 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 259
markrad 0:cdf462088d13 260 return( ctx->pk_info->sign_func( ctx->pk_ctx, md_alg, hash, hash_len,
markrad 0:cdf462088d13 261 sig, sig_len, f_rng, p_rng ) );
markrad 0:cdf462088d13 262 }
markrad 0:cdf462088d13 263
markrad 0:cdf462088d13 264 /*
markrad 0:cdf462088d13 265 * Decrypt message
markrad 0:cdf462088d13 266 */
markrad 0:cdf462088d13 267 int mbedtls_pk_decrypt( mbedtls_pk_context *ctx,
markrad 0:cdf462088d13 268 const unsigned char *input, size_t ilen,
markrad 0:cdf462088d13 269 unsigned char *output, size_t *olen, size_t osize,
markrad 0:cdf462088d13 270 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
markrad 0:cdf462088d13 271 {
markrad 0:cdf462088d13 272 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 273 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 274
markrad 0:cdf462088d13 275 if( ctx->pk_info->decrypt_func == NULL )
markrad 0:cdf462088d13 276 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 277
markrad 0:cdf462088d13 278 return( ctx->pk_info->decrypt_func( ctx->pk_ctx, input, ilen,
markrad 0:cdf462088d13 279 output, olen, osize, f_rng, p_rng ) );
markrad 0:cdf462088d13 280 }
markrad 0:cdf462088d13 281
markrad 0:cdf462088d13 282 /*
markrad 0:cdf462088d13 283 * Encrypt message
markrad 0:cdf462088d13 284 */
markrad 0:cdf462088d13 285 int mbedtls_pk_encrypt( mbedtls_pk_context *ctx,
markrad 0:cdf462088d13 286 const unsigned char *input, size_t ilen,
markrad 0:cdf462088d13 287 unsigned char *output, size_t *olen, size_t osize,
markrad 0:cdf462088d13 288 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
markrad 0:cdf462088d13 289 {
markrad 0:cdf462088d13 290 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 291 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 292
markrad 0:cdf462088d13 293 if( ctx->pk_info->encrypt_func == NULL )
markrad 0:cdf462088d13 294 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 295
markrad 0:cdf462088d13 296 return( ctx->pk_info->encrypt_func( ctx->pk_ctx, input, ilen,
markrad 0:cdf462088d13 297 output, olen, osize, f_rng, p_rng ) );
markrad 0:cdf462088d13 298 }
markrad 0:cdf462088d13 299
markrad 0:cdf462088d13 300 /*
markrad 0:cdf462088d13 301 * Check public-private key pair
markrad 0:cdf462088d13 302 */
markrad 0:cdf462088d13 303 int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv )
markrad 0:cdf462088d13 304 {
markrad 0:cdf462088d13 305 if( pub == NULL || pub->pk_info == NULL ||
markrad 0:cdf462088d13 306 prv == NULL || prv->pk_info == NULL ||
markrad 0:cdf462088d13 307 prv->pk_info->check_pair_func == NULL )
markrad 0:cdf462088d13 308 {
markrad 0:cdf462088d13 309 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 310 }
markrad 0:cdf462088d13 311
markrad 0:cdf462088d13 312 if( prv->pk_info->type == MBEDTLS_PK_RSA_ALT )
markrad 0:cdf462088d13 313 {
markrad 0:cdf462088d13 314 if( pub->pk_info->type != MBEDTLS_PK_RSA )
markrad 0:cdf462088d13 315 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 316 }
markrad 0:cdf462088d13 317 else
markrad 0:cdf462088d13 318 {
markrad 0:cdf462088d13 319 if( pub->pk_info != prv->pk_info )
markrad 0:cdf462088d13 320 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 321 }
markrad 0:cdf462088d13 322
markrad 0:cdf462088d13 323 return( prv->pk_info->check_pair_func( pub->pk_ctx, prv->pk_ctx ) );
markrad 0:cdf462088d13 324 }
markrad 0:cdf462088d13 325
markrad 0:cdf462088d13 326 /*
markrad 0:cdf462088d13 327 * Get key size in bits
markrad 0:cdf462088d13 328 */
markrad 0:cdf462088d13 329 size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 330 {
markrad 0:cdf462088d13 331 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 332 return( 0 );
markrad 0:cdf462088d13 333
markrad 0:cdf462088d13 334 return( ctx->pk_info->get_bitlen( ctx->pk_ctx ) );
markrad 0:cdf462088d13 335 }
markrad 0:cdf462088d13 336
markrad 0:cdf462088d13 337 /*
markrad 0:cdf462088d13 338 * Export debug information
markrad 0:cdf462088d13 339 */
markrad 0:cdf462088d13 340 int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items )
markrad 0:cdf462088d13 341 {
markrad 0:cdf462088d13 342 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 343 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 344
markrad 0:cdf462088d13 345 if( ctx->pk_info->debug_func == NULL )
markrad 0:cdf462088d13 346 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 347
markrad 0:cdf462088d13 348 ctx->pk_info->debug_func( ctx->pk_ctx, items );
markrad 0:cdf462088d13 349 return( 0 );
markrad 0:cdf462088d13 350 }
markrad 0:cdf462088d13 351
markrad 0:cdf462088d13 352 /*
markrad 0:cdf462088d13 353 * Access the PK type name
markrad 0:cdf462088d13 354 */
markrad 0:cdf462088d13 355 const char *mbedtls_pk_get_name( const mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 356 {
markrad 0:cdf462088d13 357 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 358 return( "invalid PK" );
markrad 0:cdf462088d13 359
markrad 0:cdf462088d13 360 return( ctx->pk_info->name );
markrad 0:cdf462088d13 361 }
markrad 0:cdf462088d13 362
markrad 0:cdf462088d13 363 /*
markrad 0:cdf462088d13 364 * Access the PK type
markrad 0:cdf462088d13 365 */
markrad 0:cdf462088d13 366 mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 367 {
markrad 0:cdf462088d13 368 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 369 return( MBEDTLS_PK_NONE );
markrad 0:cdf462088d13 370
markrad 0:cdf462088d13 371 return( ctx->pk_info->type );
markrad 0:cdf462088d13 372 }
markrad 0:cdf462088d13 373
markrad 0:cdf462088d13 374 #endif /* MBEDTLS_PK_C */